Duplex sash-lock.



W LIPPS.

DUPLEX SASH LOOK.

APPLICATION FILED SEPT. 26, 1908.

Patented Jan. 12, 1909.

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WITNESSES an i IN VEN TOR.

A TTORN E Y.

UNITED STA'i ES PA'lfENT OFFICE.

WILLIAM LIPPS, OF SHELBYVILLE, INDIANA, ASSIGNOR OF ONE-HALE TO DANIEL DE PREZ,

SHELBYVILLE, INDIANA.

DUPLEX SASH-LOGK.

. Specification of Letters Patent.

Patented Jan. 12, 1909.

Application filed September 26, 1908. Serial No. 464,857

To all whom it may concern:

Be it known that 1, WILLIAM Lners, a citizen of the United States, residing at Shelbyviile, in the county of Shelby and State of Indiana, have invented certain new and useful Improvements in Duplex Sash-Locks; and I do declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to looks for vertically sliding window sashes and to the class adapted to lock both the upper sash and the lower sash in any desired position independently either when open more or less or in closed positions, and so that the sashes will be secured to the window frame.

The object of the invention is to provide an improved duplex sash lock that will be very stron and yet adapted to' be of light weight an cheaply constructed, and which will not be liable to get out of order when in With the above mentioned and other objects in view the invention consists in an improved du lex sash lock having novel forms of lock b0 ts and guides therefor and having also novel devices for withdrawing the lockbolts; and the invention consists further in parts, and combinations and arrangements of parts, as hereinafter particularly described and defined in the accompanying claims.

Referring to the drawings, Figure 1 is a fragmentary front elevation of a windowlrame and a air of sashes to which the improved sash ock is applied; Fig. 2, a front elevation of the lock minus the front plate thereof and partially broken away; Fig. 3, a transverse scctiona view of the complete look at the plane of the line A A in Fig. 2;

Fig. 4, a transverse sectional view of the complete look at "the plane of the lineB B in Fig. 2; Fig. 5, a fragmentary sectional elevation approximately on the line C O in Fig. 1, and broken away at diilerent planes to expose the sash look; big. 6, a side view of the key whereby the lock may be operated; Fi 7, a horizontal sectional view of the comp ete lock on the line'D D in Fig. 2; Fig. 8, a fragmentary horizontal sectional view approximately on the line E E in Fig. 5; Fig. 9, a longitudinal sectional view of one of thejlock bolt guides;

and, Fig. 10, a perspective view of one of the lock bolts.

Similar reference characters throughout the drawings indicate like elements or features of construction referred to herein.

The improved sash-lock comprises a lock case preferably formed of sheet metal and comprising a back 1 a top 2 and a bottom 3 formed integral with the back, and ends 4 and 5 also formed integral with the back, the ends having projections 4 and 5' respectively; a .front 6 secured to the top and bottom and also to the ends by means of said projections, the front having projections 6 and 6 by which the lock case is secured by means of screws 7 and '7'. The case is box-shaped and designed to be set into the window frame, so as'to be hidden by the sashes In one end portion of the case is a lock-bolt guide 8, and a similar guide 8' is arranged in the opposite end ortion of the case, the guides being preferab y formed of sheet metal rolled into tubular form and having projections 9 and 9' whereby they are secured to the back 1 of the case the guides extending through suitable openings in the front 6 of the case, so that the guides are firmly supported. Each uide has two op ositely dis osed slots 10 in the wall thereof extending ongitudinally, and the outer ends of the slots serve as stopshoulders for limiting the outward movemerits of the lock-bolts 11 and 11 which are mounted slidingly in the guides, one to a guide, one lock-bo1t havin lateral projections 12 and the other'lockiolt having similar projections 12', the rojections extending through the slots. i coil sprin 13 extends about the guide Sand is seater against the back 1 and engages the rejections 12; a spring 13 extends about t e guide 8 and being seated against the back 1 engages the projections 12, the springs normally orcing the lock-bolts outward to operative positions with the projections engaging the sto -shoulders. In this construction as will "e seen the lock-bolts have considerable length and relatively long guides are provided for the lockbolts, and also relatively long springs are used, so as to be durable.

A rock-shaft 14 is suitably journaled at its ends in the ends 4 and 5 of the case, and one end thereof has a bore 15 and two longitudinal slots 16 and 16' extending from the bore through the wall of the rock-shaft which, as

is apparent, is hollow at one end thereof. A collar 17 is placed on the rock-shaft and is securedthereto by a pin 18, the collar having projections 19 and 19 extendin to the inner sides of the ends 4 and of t e case and preventing the rock-shalt from longitudinal movement. The collar has two integral fingers 20 and 20 that engage the projections the lock-bolts, the fingers being arranged between the )I()- jections and the front 6 of the case. A p ate "spring 21 is suitally secured to the back 1 and extends over the rock-shaft 14 and near he and 5 of the case, the spring having a proaction 22 at the undersi e of its end to be engagedby a key which comprises a c linder iiavin a air of win s 24 and 24' t ereon,

5 the 0 iii! 'er aving a shank 25 on which is a hand the slots 16 and 16' 926. The c linder 23 may be inserted the wings 24 and 24' in which will enable the key to'turn the rock-shaft until the uppermost one o f-thewings passes under the rejection 22;and caug t thereby to be hel under orin'the bore 15 wit dinary'bonditions, and by turning the key forcibly in reverse direction, the wing may I. e

that is attached to iorced from under the projection, so as to "again permit the withdrawn lock-l olts to advance outward to normal positions. The proper position in which the lock should. e placed is in a mortise in the frame 27 of the window with the face of the front 6 flush with the front-face of the frame parts against which the sashes are designed to slide.

In the drawings, 28 indicates the facing the frame 27 and preferably a tube 29 is inserted in the frame and facing for uiding the key to the sash-lock,

. readil and escutc eon 30 bein attached to the faoi 28 at the outer en of the guide tube 29. l'he dividing strip 31 between the sashes is cut away to permit the lock to be removed if. desired, and the guide strip 2 is of the usual form, 33 indicating the lower sash and 34 the upper rail thereo 35 indicating the'upper sash and 36 the lower rail thereof. The sashes are referally ro- I vided with perforated metal Ip ates 37 an 38 arranged o posite to the loc bolts 8 and 8, as has here ofore been the practice.

In practical use the key is inserted through the guide tube 29 and into the hollow end of the rock-shajtfafter which the key may be htly toward the right until caught to" t'o'n22, thus unlocking both either one or both sashes o ap roximately the dew ich the key may be reverse direction; "or the key may until the, wing becomes disrojection 22 and then the key may be slight y turned and withdrawn, the result in either case being that the springs 1318M! T3 w ill reject the lock-bolts against the sashes or te plates 37 and 38.

Then by inoving the sashes slightly the lock bolts will enter the perforations in the plates, or the sashes. Of course, if one of the sashes is not shifted one lock-bolt will return to its former position in such sash.

Havin thus described the invention, what is claime' as new, is

1. A sash lock comprising a case having a back and a front, a tubular guide secured to the back and extending through the front of the case, the guide having two longitudinal slots in its wall, a lock-bolt movable longitudinally in the guide and having two projections thereon extending through the slots, a spring on the guide seated against said back and also against said projections, a rockshaft mounted in the case, and a finger on the rock-shaft engaging one of said projections.

2. A sash lock comprising a case having a back and two ends, a lock-bolt mounted movably in the case and having a projection thereon, spring seated against the hack and also ggamst the projection, a rock-shaft mounted in the ends and having a bore in one end thereof and slots at the sides of the bore, a finger on the rock-shaft engagin said projection,.a key to enter said bore anr. having wings to enter said slots to turn the rockshaft, and a spring secured to said back and extending over the rock-shaft, said spring having a projection thereon to be engaged by one of said wings 3. A duplex sash lock comprising a case having a back and a front and also two ends, two tubular guides secured to said back and extending through said front, each guide hav' two longitudinal slots in its wall, two lock iolts movable longitudinally in the guides, one in each gui e, each lock-bolt aving two projections that extend through the slots in the guide, two s rings coiled about the guides, one on eac guide, and seated against said back and also against the pro'ections' that extend through said slots, sai springs normally holdin said projections in contact with said wal s at the outer endsvof said slots, a rock-shaft mounted in said case ends and having a bore and also slots in one end thereof to receive a wing-key, a spring secured to said back and havin a PIOLQOUOII thereon to be en aged by a wing of t e key, a collar on the rec -shaft and having two projections thereon engaging said case ends, a pin securing said collar to said rock-shaft, and two fingers on said collar and engaging projections on said lock-bolts.

n testimony whereof, I aflix m signature in resence of two witnesses, on the 21" day of eptember, 1908.

WILLIAM LIPPS.

Witnesses:

0. JAY GLassNER, C. B. Coos. 

